Would you consider adding to this mod an optional battery degradation feature. Most batteries both now and in the 90's are primary cell. These batteries are not designed to be recharged but they can be forced to do so. This however can cause damage and degrade the battery in several ways, leading to slower recharging, faster draining, and potentially introducing mechanical failures inside which can cause a leak, complete failure, or sometimes a fire or even explosion. This is the main reason why recharging non-rechargeable batteries is not a good idea in anything but an emergency or zombie apocalypse.

Not all of this needs to be added of course, but I think besides the realism aspect, batteries losing condition over repeated charge cycles could result in a less frustrating experience than vanilla especially in the late game, while still encouraging looting for batteries and disposing of old ones.